Cassandra Clare

No, I'm just a very naughty boy. I do all sorts of bad things. I kick kittens. I make rude gestures at nuns.

"Are you implying that shreds of my reputation remain intact?" Will demanded with mock horror. "Clearly I have been doing something wrong. Or not something wrong, as the case may be."

He banged on the side of the carriage. "Thomas! We must away at once to the nearest brothel. I seek scandal and low companionship."

"You're the first Shadowhunter I've ever met."
“That’s too bad,” said Jace, “since all the others you meet from now on will be a terrible letdown.

"We're not dating," Alec said again.
"Oh?" Magnus said. "So you're just that friendly with everybody, is that it?"

It's the mortal cup Jace, not the mortal toilet bowl.

"So when the moon's only partly full, you only feel a little wolfy?"
"You could say that."
"Well, you can go ahead and hang your head out the car window if you feel like it."
"I'm a werewolf, not a golden retriever."

"And I'm suppose to sit by while you date boys and fall in love with someone else, get married...?" His voice tightened. "And meanwhile, I'll die a little bit more every day, watching."

Mom. I have something to tell you. I’m undead. Now, I know you may have some preconceived notions about the undead. I know you may not be comfortable with the idea of me being undead. But I’m here to tell you that undead are just like you and me … well, okay. Possibly more like me than you.

That's why when major badasses greet each other in movies, they don't say anything, they just nod. The nod means, 'I' am a badass, and I recognize that you, too, are a badass,' but they don't say anything because they're Wolverine and Magneto and it would mess up their vibe to explain.

"If you're texting Magnus to say 'I think u r kewl,' I'm going to kill you."
"Who's Magnus?" Max inquired.
"He's a warlock," said Alec.
"A sexy, sexy warlock," Isabelle told Max, ignoring Alec's look of total fury.
"But warlocks are bad," protested Max, looking baffled.
"Exactly," said Isabelle.

"You never called me back," he said. "I called you so many times and you never called me back."
Magnus looked at Alec as if he'd lost his mind. "Your city is under attack," he said. "The wards have been broken, and the streets are full of demons. And you want to know why I haven't <i>called you?</i>"
Alec set his jaw in a stubborn line. "I want to know why you haven't called me <i>back.</i>"
Magnus threw his hands up in the air in a gesture of utter exasperation. Alec noted with interest that when he did it, a few sparks escaped from his fingertips, like fireflies escaping from a jar. "You're an idiot."
"Is <i>that</i> why you haven't called me? Because I'm an idiot?"
"No." Magnus strode toward him. "I didn't call you because I'm tired of you only wanting me around when you need something. I'm tired of watching you be in love with someone else - someone, incidentally, who will never love you back. Not the way I do."
"You <i>love</i> me?"
"You stupid Nephilim," Magnus said patiently. "Why else am I here? Why else would I have spent the past few weeks patching up all your moronic friends every time they got hurt? And getting you out of every ridiculous situation you found yourself in? Not to mention helping you win a battle against Valentine. And all completely free of charge!"

"That was enterprising," Will sounded nearly impressed.
Nate smiled. Tess shot him a furious look. "Don't look pleased with yourself. When Will says 'enterprising' he means 'morally deficient.'"
"No, I mean enterprising," said Will. "When I mean morally deficient, I say, 'Now, that's something I would have done'."

And next time you're planning to injure yourself to get me attention, just remember that a little sweet talk works wonders.

So you're a Shadowhunter,' Nate said. 'De Quincey told me that you lot were monsters.'
'Was that before or after he tried to eat you?' Will inquired.

"I forgot that's what gets you all hot and bothered, Jace, girls killing things."
"I like anyone killing things, especially me." he said with a smile.